Electromagnetic radiation of wavelength 242 nm is just sufficient to ionise the sodium atom . Calculate the ionisation energy of sodium in kJ/mol .
Calculate the wavelength, frequency and wavenumber of a light wave whose period is 2.0 × 10-¹⁰ s
What is the number of photons of light with wavelength of 4000 pm that provide 1J of energy?
Yellow light emitted from a sodium lamp has a wavelength of 580nm . calculate the frequency and wavenumber of the yellow light
Calculate the number of atoms in each of the following 1] 52 moles of Ar 2] 52 u ofe He 3] 52 g of He
Calculate the molarity of a solution of ethanol in water in which the mole fraction of ethanol is 0.040 ( assume the density of water be one
Which of the following distance-time graphs shows a truck moving with speed which is not constant?
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